Minimally Invasive Knee Replacement
Total knee replacement is a very successful surgical treatment for knee arthritis. Over the years, knee replacement surgery can be done through minimally invasive approach which involves much smaller incisions than the usual 10-12inch incisions used in the traditional knee replacement.
The smaller incisions with minimally invasive surgery means that less tissues are cut resulting in quicker healing and recovery. The potential advantages of minimally invasive joint replacement surgery are:
- Minimal surgical dissection
- Shorter recovery period
- Shorter hospital stay
- Reduced postoperative pain
Minimally invasive surgery for knee replacement involves use of smaller incisions which are only 4 to 6 inches in length as compared to the 10-12 inch long incision used in the traditional procedure.
Surgery is performed under sterile conditions in the operating theatre under spinal or general anesthesia.
You will be lying down on your back on the operating table and a tourniquet is applied to your upper thigh to reduce blood loss. Then your surgeon makes an incision along the affected knee to expose the knee joint.
The surgeon first focuses on the femur (thighbone). The damaged portions of the femur are cut at the appropriate angles using specialized jigs. Then the femoral component is attached to the end of the femur with or without bone cement.
The next step involves removal of the damaged area of the tibia (shinbone) and the cartilage. It allows for a smooth surface to which implants can be attached. The tibial component is then secured to the end of the bone using bone cement or screws.
Your surgeon will place a plastic piece called an articular surface between these implants to ensure a smooth gliding movement. This plastic insert acts in a similar way as the original articular cartilage and helps in supporting your body weight as well as allows the femur bone to move over the tibia.
The femur and the tibia bone with their new components are put together to form the new knee joint.
To ensure that the patella (knee cap) glides smoothly over the new artificial knee, its rear surface is prepared to receive a plastic component.
With all its new components in place, the knee joint is examined through its range of motion.
All excess cement will be removed and the entire joint will be irrigated or cleaned out with a sterile saline solution. The incision is then carefully closed and drains are usually inserted. Then a surgical dressing or bandage is placed.
Click on the topics below to find out more from the orthopaedic connection website of American Academy of Orthopaedic Surgeons.
- ACL Injury: Should it be fixed?
- Activities After a Knee Replacement
- Additional Resources on the Knee
- Adolescent Anterior Knee Pain
- Arthritis of the Knee
- Care of the Aging Knee: Baby Boomers May Need Lifestyle Changes
- Cemented and Cementless Knee Replacement
- Deep Vein Thrombosis
- Frequently Asked Questions about Osteoarthritis of the Knee
- Goosefoot (Pes Anserine) Bursitis of the Knee
- Knee Arthroscopy
- Knee Arthroscopy Exercise Guide
- Knee Implants
- Knee Replacement Exercise Guide
- Kneecap (Prepatellar) Bursitis
- Meniscal Tear
- Meniscal Transplants
- Minimally Invasive Total Knee Replacement
- Nonsurgical Treatment Options for Osteoarthritis of the Knee
- Orthopaedists Research Female Knee Problems
- Osgood-Schlatter Disease (Knee Pain)
- Osteonecrosis of the Knee
- Posterior Cruciate Ligament (PCL) Tear
- Rotating Platform/Mobile-bearing Knees
- Runner’s Knee (Patellofemoral Pain)
- Surgical Treatment of Osteoarthritis of the Knee
- The Knee
- Total Knee Replacement
- Unstable Kneecap
- Viscosupplementation Treatment for Arthritis